Music theory teaching device

Abstract

The invention belongs to the technical field of music theory teaching, and particularly relates to a music theory teaching device which comprises a music theory teaching device body and an electronic organ, a fixing base is arranged in the middle of the top of the music theory teaching device body, and a first fixing shaft is arranged in the front of the interior of the fixing base; the first fixing shaft is sleeved with a first fixing block, a display screen is arranged in front of the top of the first fixing block, a storage frame is arranged behind the display screen, a writing board is arranged on the left side of the interior of the storage frame, and a staff board is arranged on the right side of the interior of the storage frame. When the music theory teaching device is used, the rotating handle is rotated to drive the adjusting gear to rotate, so that the writing board and the staff board in the storage frame are moved out, music theory knowledge is explained on the writing board and music scores in data are drawn on the staff board through image data displayed on the display screen, and the music theory teaching device is convenient to use. Therefore, teaching of music knowledge from a visual angle is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of music theory teaching, in particular to a music theory teaching device. Background Art

[0002] Music theory, also known as music theory, is a required course for learning music. What we usually call music theory generally refers to the basic part of music theory, that is, "basic music theory". The problems to be solved are related to the nature of sound, temperament, notation, basic elements of music, basic laws of combination between sounds, etc., and the method of notation and reading music is a very important part of it.

[0003] After searching, the publication number CN210244703U discloses a teaching device for rapid learning of music theory. The utility model relates to the technical field of teaching equipment and discloses a teaching device for rapid learning of music theory. The teaching device for rapid learning of music theory comprises a first frame, a storage plate is fixedly installed on the outer wall of the front surface of the bottom end of the first frame, a stave board is fixedly installed inside the first frame, two vertical rods are fixedly installed on the bottom of the first frame, and a horizontal rod is fixedly installed between the vertical rods.

[0004] In the above-mentioned teaching device for rapid learning of music theory, several groups of staves are printed on the stave board. During teaching, the teacher can directly draw notes on the stave board and write on the explanation boards on both sides, so as to facilitate the explanation of the score. When the explanation score needs to be replaced, because the stave is printed, erasing the notes will not erase the stave, so there is no need to redraw the stave, thereby improving the teaching efficiency. However, there are still some problems as follows:

[0005] When teaching music theory, simply drawing music scores lacks innovation and diversity, making it difficult to stimulate students' interest and enthusiasm in learning. At the same time, due to the singleness of the teaching method, it is difficult for teachers to design and adjust personalized teaching according to the different needs and characteristics of students, thus affecting teaching effectiveness and learning quality.

[0006] Therefore, a music theory teaching device is proposed in view of the above problems. Summary of the invention

[0007] 1. Technical issues to be resolved

[0008] In view of the deficiencies in the prior art, the present invention provides a music theory teaching device, which solves the problem of the singleness of music theory teaching.

[0009] (II) Technical solution

[0010] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a music theory teaching device, comprising a music theory teaching device main body and an electronic piano, a fixed base is arranged in the middle of the top of the music theory teaching device main body, a first fixed shaft is arranged in the front of the interior of the fixed base, a first fixed block is sleeved on the outside of the first fixed shaft, a display screen is arranged in the front of the top of the first fixed block, a storage frame is arranged behind the display screen, a writing board is arranged on the left side of the interior of the storage frame, a staff board is arranged on the right side of the interior of the storage frame, guide sliders are arranged on the upper and lower sides of the writing board and the staff board, guide grooves are opened on the upper and lower sides of the interior of the storage frame, a connecting block is arranged on the side of the top of the guide slider close to the central axis of the storage frame, a fixed rack is arranged above the connecting block, an adjusting gear is arranged between the two fixed racks, and a turning handle is connected to the input end of the adjusting gear.

[0011] Preferably, the first fixed block is movably pinned to the fixed base via a first fixed shaft, the first fixed block is respectively fixedly connected to the display screen and the storage frame, the guide slider is respectively fixedly connected to the writing board and the staff board, the guide slider is adapted to the guide slide groove, the guide slider above is fixedly connected to the connecting block, the connecting block is fixedly connected to the fixed rack, the fixed rack is meshed with the adjusting gear, and the adjusting gear is fixedly connected to the turning handle.

[0012] Preferably, a first sprocket is provided on the left side of the first fixed shaft, a transmission chain is provided on the outer sleeve of the first sprocket, a second sprocket is provided at the rear of the transmission chain, an input end of the second sprocket is connected to a first motor, a fixed frame is provided at the rear of the storage frame, supporting slide rods are provided on both sides of the fixed frame, a sliding sleeve block is provided on the outer sleeve of the supporting slide rod, and an adjustment plate is provided at the rear of the sliding sleeve block.

[0013] Preferably, the first fixed shaft is fixedly connected to the first sprocket, the first sprocket is chain-driven with the second sprocket via a transmission chain, the second sprocket is fixedly connected to the first motor, the storage frame is fixedly connected to the fixed frame, the fixed frame is fixedly connected to the support slide rod, the support slide rod passes through the sliding sleeve block, and the adjustment plate is movably pinned to the sliding sleeve block and the fixed base respectively.

[0014] Preferably, an electronic keyboard is arranged in front of the fixed base, a second fixed shaft is penetrated inside the rear of the electronic keyboard, a second fixed block is sleeved on the outside of the second fixed shaft, a protective cover is arranged on the top of the second fixed block, guide slide bars are arranged on the inner walls on both sides of the electronic keyboard, a fixed spring is sleeved on the outside of the guide slide bar, a movable sleeve block is arranged on the side of the fixed spring close to the central axis of the electronic keyboard, and a baffle is arranged in front of the movable sleeve block.

[0015] Preferably, the electronic keyboard is movably pin-connected to the second fixed block via a second fixed shaft, the second fixed block is fixedly connected to the protective cover, the guide slide rod passes through a movable sleeve block, the movable sleeve block is elastically connected to the electronic keyboard via a fixed spring, and the movable sleeve block is fixedly connected to the baffle.

[0016] Preferably, both sides of the fixed base are provided with audio, a writing tool storage box is arranged in front of the speaker on the left side, a supporting base column is arranged in front of the speaker on the right side, a movable column is arranged in the inside of the support base column, a fixed gear is arranged on the left side of the support base column, a gear is arranged on the left side of the movable column, a locking screw is arranged on the upper side of the fixed gear, a locking block is arranged on the right side of the locking screw, a movable tube is arranged on the top of the movable column, one end of the movable tube is arranged with a microphone connected to the other end of the movable tube.

[0017] Preferably, the supporting base column is movably pin-connected to the fixed gear, the fixed gear is meshed with the tooth groove, the locking screw is movably connected to the locking block, the locking block is meshed with the tooth groove, the movable column is fixedly connected to the knot tube, and the knot tube is fixedly connected to the microphone.

[0018] Preferably, a support base is arranged below the main body of the music theory teaching device, and a bidirectional screw is arranged on the bottom of the support base, and a second motor is connected to the input end of the bidirectional screw. Both sides of the external two-way screw are arranged on both sides of the screw slide, and a movable plate is arranged on the upper side of the screw slide, and two movable plates are arranged on the cross, and a support sleeve block is arranged on the upper side of the support plate, and a support plate is arranged on both sides of the support plate is arranged on both sides of the support plate, and a fixed slide bar is arranged on the inner side of the movable sleeve column, a connecting frame is arranged on the top of the movable sleeve column, and a support wheel is arranged on both sides of the bottom of the support base.

[0019] Preferably, the second motor is fixedly connected with a bidirectional screw rod, the bidirectional screw rod is threaded with the screw rod slider, the movable plate is respectively connected with the screw rod slider and the support sleeve block movable pin, the two movable plates are respectively connected, the support plate passes through the support sleeve block, the support plate is fixedly connected with the movable sleeve column, the fixed slide rod passes through the movable sleeve column, the movable sleeve column is fixedly connected with the connecting frame, the connecting frame is fixedly connected with the fixed base, and the support base is fixedly connected with the support wheel.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the present invention provides a music theory teaching device, which has the following beneficial effects:

[0022] 1. When the music theory teaching device is in use, the adjusting gear is driven to rotate by rotating the handle, so that the writing board and the five-line stave board in the storage frame can be moved out, and the video data projected on the display screen is used to explain the music theory knowledge on the writing board, and the music score in the data is drawn on the five-line stave board, so as to teach the music theory knowledge from a visual perspective.

[0023] 2. When the music theory teaching device is in use, the first motor is started to drive the second sprocket to rotate. Since the first sprocket is chain-driven with the second sprocket through the transmission chain, the second sprocket pushes the transmission chain to move under the action of friction, driving the first sprocket to rotate together, so that the first fixed shaft drives the first fixed block to rotate accordingly. Since the adjustment plate is respectively movably pin-connected with the sliding block and the fixed base, the adjustment plate moves along the supporting slide rod under the action of the sliding block during rotation, thereby supporting the display screen and completing the adjustment of the angle of the display screen, so that students can view the contents of the display screen, the writing board and the staff board.

[0024] 3. When the music theory teaching device is used, the baffles on both sides of the electronic keyboard are pulled to rotate the protective cover around the second fixed axis to a vertical state, and the baffles are loosened. Under the elastic force of the fixed spring, the movable sleeves on both sides drive the baffles to move toward each other, and the protective cover in the vertical state is fixed to facilitate the use of the electronic keyboard. By letting students listen to the sounds produced by the electronic keyboard, they can better understand the music theory knowledge in the music score, increase their interest in learning, and teach music theory knowledge from an auditory perspective.

[0025] 4. When using the music theory teaching device, the writing tools can be placed in the writing tool storage box, and the movable column can drive the microphone to move vertically by rotating the fixed gear. When it moves to a suitable height, the locking screw is rotated, and the locking block is pushed into the tooth groove under the action of the thread to fix the movable column, thereby completing the adjustment of the height of the sound receiving device. The direction and angle of the microphone can be adjusted through the multi-tie tube to facilitate the microphone to receive sound. When teaching music theory knowledge, it is also necessary to teach in the form of the teacher singing and the students singing along, so that the students can master the music score while singing along, and the teacher can also find the students' questions and answer them while singing along, thereby enhancing interactivity and improving the enthusiasm for learning.

[0026] 5. When the music theory teaching device is in use, the second motor is started to drive the bidirectional lead screw to rotate. Under the action of the thread, the lead screw sliders on both sides move toward each other. Since the movable plate is respectively connected with the lead screw slider and the support sleeve block, the two movable plates are connected with the lead screw slider, so that the lead screw slider drives the movable plates to approach each other. At the same time, the support sleeve block moves toward each other along the movable sleeve column, pushing the support plate to move up, so that the movable sleeve columns on both sides drive the connecting frame to move up along the fixed slide rod, completing the adjustment of the height of the entire music theory teaching device. When in use, the height of the device can be flexibly adjusted according to the height of the teacher to facilitate teaching. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 It is a schematic diagram of the three-dimensional structure inside the storage frame of the present invention;

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure inside the fixed base of the present invention;

[0031] Figure 4 It is a three-dimensional structural schematic diagram of the electronic keyboard of the present invention;

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure inside the sound receiving device of the present invention;

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure inside the support base of the present invention;

[0034] Figure 7 The present invention Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0035] In the figure: 1. Music theory teaching device body; 2. Fixed base; 3. First fixed axis; 4. Display screen; 5. Storage frame; 6. Writing board; 7. Music board; 8. Guide slider; 9. Guide slide; 10. Connecting block; 11. Fixed rack; 12. Adjusting gear; 13. Turning handle; 14. First sprocket; 15. Transmission chain; 16. Second sprocket; 17. First motor; 18. Fixed frame; 19. Support slide bar; 20. Sliding block; 21. Adjusting plate; 22. Electronic keyboard; 23. Second fixed axis; 24. Protective cover; 25. Guide slide bar; 26, fixed spring; 27, movable sleeve block; 28, baffle; 29, speaker; 30, writing tool storage box; 31, supporting base column; 32, movable column; 33, fixed gear; 34, tooth groove; 35, locking screw; 36, locking block; 37, universal joint tube; 38, microphone; 39, supporting base; 40, two-way lead screw; 41, second motor; 42, lead screw slider; 43, movable plate; 44, supporting sleeve block; 45, supporting plate; 46, movable sleeve column; 47, fixed slide bar; 48, connecting frame; 49, supporting wheel. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Specific examples are given below.

[0038] See also Figure 1-Figure 3The present invention provides a music theory teaching device, comprising a music theory teaching device body 1 and an electronic keyboard 22, wherein a fixed base 2 is arranged in the middle of the top of the music theory teaching device body 1, a first fixed shaft 3 is arranged in the front of the fixed base 2, a first fixed block is sleeved on the outside of the first fixed shaft 3, a display screen 4 is arranged in the front of the top of the first fixed block, a storage frame 5 is arranged behind the display screen 4, a writing board 6 is arranged on the left side of the storage frame 5, a staff board 7 is arranged on the right side of the storage frame 5, guide sliders 8 are arranged on the upper and lower sides of the writing board 6 and the staff board 7, guide slide grooves 9 are opened on the upper and lower sides of the storage frame 5, and the top of the upper guide slider 8 is close to the storage A connecting block 10 is provided on one side of the central axis of the receiving frame 5, a fixed rack 11 is provided above the connecting block 10, an adjusting gear 12 is provided between the two fixed racks 11, and a turning handle 13 is connected to the input end of the adjusting gear 12. The first fixed block is movably pinned to the fixed base 2 through the first fixed shaft 3, and the first fixed block is fixedly connected to the display screen 4 and the storage frame 5 respectively. The guide slider 8 is fixedly connected to the writing board 6 and the staff board 7 respectively, and the guide slider 8 is adapted to the guide slide groove 9. The upper guide slider 8 is fixedly connected to the connecting block 10, and the connecting block 10 is fixedly connected to the fixed rack 11. The fixed rack 11 is meshed with the adjusting gear 12, and the adjusting gear 12 is fixedly connected to the turning handle 13.

[0039] Through the above scheme: when in use, the handle 13 is rotated to drive the adjusting gear 12 to rotate. Since the fixed rack 11 is meshed with the adjusting gear 12, under the meshing action of the gears, the fixed racks 11 on both sides drive the connecting block 10 to move to both sides, so that under the action of the guide slider 8, the writing board 6 moves to the left along the guide slot 9, and the staff board 7 moves to the right along the guide slot 9, so as to facilitate the writing of music theory knowledge and the drawing of music scores during teaching.

[0040] Further Figure 1-Figure 3 As shown, a first sprocket 14 is arranged on the left side of the first fixed shaft 3, a transmission chain 15 is sleeved on the outside of the first sprocket 14, a second sprocket 16 is arranged at the rear of the transmission chain 15, an input end of the second sprocket 16 is connected to a first motor 17, a fixing frame 18 is arranged at the rear of the storage frame 5, support slide bars 19 are arranged on both sides of the fixing frame 18, a sleeve block 20 is sleeved on the outside of the support slide bar 19, an adjustment plate 21 is arranged at the rear of the sleeve block 20, the first fixed shaft 3 is fixedly connected to the first sprocket 14, the first sprocket 14 is chain-driven with the second sprocket 16 through the transmission chain 15, the second sprocket 16 is fixedly connected to the first motor 17, the storage frame 5 is fixedly connected to the fixing frame 18, the fixing frame 18 is fixedly connected to the support slide bar 19, the support slide bar 19 passes through the sleeve block 20, and the adjustment plate 21 is movably pinned to the sleeve block 20 and the fixed base 2 respectively.

[0041] Through the above scheme: when in use, the first motor 17 is started to drive the second sprocket 16 to rotate. Since the first sprocket 14 is chain-driven with the second sprocket 16 through the transmission chain 15, the second sprocket 16 pushes the transmission chain 15 to move under the action of friction, driving the first sprocket 14 to rotate together, so that the first fixed shaft 3 drives the first fixed block to rotate accordingly. Since the adjustment plate 21 is respectively movably pin-connected with the sliding block 20 and the fixed base 2, when rotating, the adjustment plate 21 moves along the supporting slide rod 19 under the action of the sliding block 20, thereby supporting the display screen 4 and completing the adjustment of the angle of the display screen 4, so that students can watch the contents of the display screen 4, the writing board 6 and the staff board 7.

[0042] Further Figure 1 , Figure 3 , Figure 4 and Figure 7 As shown, an electronic keyboard 22 is arranged in front of the fixed base 2, a second fixed shaft 23 is penetrated inside the rear of the electronic keyboard 22, a second fixed block is sleeved on the outside of the second fixed shaft 23, a protective cover 24 is arranged on the top of the second fixed block, guide slide bars 25 are arranged on the inner walls on both sides of the electronic keyboard 22, a fixed spring 26 is sleeved on the outside of the guide slide bars 25, a movable sleeve block 27 is arranged on the side of the fixed spring 26 close to the central axis of the electronic keyboard 22, a baffle 28 is arranged in front of the movable sleeve block 27, the electronic keyboard 22 is movably pin-connected with the second fixed block through the second fixed shaft 23, the second fixed block is fixedly connected to the protective cover 24, the guide slide bar 25 passes through the movable sleeve block 27, the movable sleeve block 27 is elastically connected to the electronic keyboard 22 through the fixed spring 26, and the movable sleeve block 27 is fixedly connected to the baffle 28.

[0043] Through the above scheme: when in use, pull the baffles 28 on both sides of the electronic keyboard 22, and under the action of the movable sleeve block 27, move them away from each other along the guide slide bar 25, squeeze the fixed spring 26, and rotate the protective cover 24 around the second fixed axis 23 to a vertical state, loosen the baffle 28, and under the elastic force of the fixed spring 26, the movable sleeve blocks 27 on both sides drive the baffle 28 to move toward each other, and fix the protective cover 24 in the vertical state to facilitate the use of the electronic keyboard 22. After use, the protective cover 24 is restored to a horizontal state to protect the keys of the electronic keyboard 22.

[0044] Further Figure 1 and Figure 5As shown, speakers 29 are provided on both sides of the fixed base 2, a writing tool storage box 30 is provided in front of the left speaker 29, and a supporting bottom column 31 is provided in front of the right speaker 29. A movable column 32 is provided inside the supporting bottom column 31, a fixed gear 33 is provided on the left side of the supporting bottom column 31, a tooth groove 34 is provided on the left side of the movable column 32, a locking screw 35 is passed through the top of the fixed gear 33, a locking block 36 is provided on the right side of the locking screw 35, a knot tube 37 is provided on the top of the movable column 32, the movable column 32 is provided at one end of the knot tube 37, and a microphone 38 is connected to the other end of the knot tube 37, the supporting bottom column 31 is movably pin-connected with the fixed gear 33, the fixed gear 33 is meshed with the tooth groove 34, the locking screw 35 is movably connected with the locking block 36, the locking block 36 is meshed with the tooth groove 34, the movable column 32 is fixedly connected to the knot tube 37, and the knot tube 37 is fixedly connected to the microphone 38.

[0045] Through the above scheme: when in use, the writing tool can be placed in the writing tool storage box 30, and the fixed gear 33 is rotated. Since the fixed gear 33 is engaged with the tooth groove 34, under the meshing action of the gears, the movable column 32 drives the microphone 38 to move vertically. When it moves to a suitable height, the locking screw 35 is rotated. Under the action of the thread, the locking block 36 is pushed into the tooth groove 34 to fix the movable column 32. Through the universal joint 37, the direction and angle of the microphone 38 can be adjusted to facilitate the microphone 38 to receive sound.

[0046] Further Figure 1 and Figure 6 As shown, a support base 39 is provided at the bottom of the main body 1 of the music theory teaching device, a bidirectional screw rod 40 is passed through the bottom of the support base 39, a second motor 41 is connected to the input end of the bidirectional screw rod 40, screw rod sliders 42 are sleeved on both sides of the outside of the bidirectional screw rod 40, a movable plate 43 is provided above the screw rod slider 42, the two movable plates 43 are cross-arranged, a support sleeve block 44 is provided above the movable plate 43, a support plate 45 is passed through the inside of the support sleeve block 44, movable sleeve columns 46 are provided on both sides of the support plate 45, a fixed slide rod 47 is passed through the inside of the movable sleeve column 46, and the top of the movable sleeve column 46 is provided with a fixed slide rod 47. A connecting frame 48 is provided at the top, and support wheels 49 are provided on both sides of the bottom of the support base 39. The second motor 41 is fixedly connected to the bidirectional screw rod 40, and the bidirectional screw rod 40 is threadedly matched with the screw rod slider 42. The movable plate 43 is movably pinned with the screw rod slider 42 and the support sleeve block 44 respectively. The two movable plates 43 are movably pinned, and the support plate 45 passes through the support sleeve block 44. The support plate 45 is fixedly connected to the movable sleeve column 46, and the fixed sliding rod 47 passes through the movable sleeve column 46. The movable sleeve column 46 is fixedly connected to the connecting frame 48, and the connecting frame 48 is fixedly connected to the fixed base 2, and the support base 39 is fixedly connected to the support wheel 49.

[0047] Through the above scheme: when in use, the second motor 41 is started, driving the bidirectional screw 40 to rotate, and under the action of the thread, the screw sliders 42 on both sides move toward each other. Since the movable plate 43 is movably pin-connected with the screw slider 42 and the support sleeve block 44 respectively, the two movable plates 43 are movably pin-connected, so that the screw slider 42 drives the movable plates 43 to approach each other. At the same time, the support sleeve block 44 moves toward each other along the movable sleeve column 46, pushing the support plate 45 to move up, so that the movable sleeve columns 46 on both sides drive the connecting frame 48 to move up along the fixed slide rod 47, completing the height adjustment of the entire music theory teaching device body 1.

[0048] Working principle:

[0049] Firstly, when in use, the second motor 41 is started, driving the bidirectional screw 40 to rotate, and under the action of the thread, the screw sliders 42 on both sides move toward each other. Since the movable plate 43 is movably pin-connected with the screw slider 42 and the support sleeve block 44 respectively, the two movable plates 43 are movably pin-connected, so that the screw slider 42 drives the movable plates 43 to approach each other. At the same time, the support sleeve block 44 moves toward each other along the movable sleeve column 46, pushing the support plate 45 to move upward, so that the movable sleeve columns 46 on both sides drive the connecting frame 48 to move upward along the fixed slide rod 47, completing the height adjustment of the entire music theory teaching device body 1.

[0050] Secondly, when in use, the first motor 17 is started to drive the second sprocket 16 to rotate. Since the first sprocket 14 is chain-driven with the second sprocket 16 through the transmission chain 15, the second sprocket 16 pushes the transmission chain 15 to move under the action of friction, driving the first sprocket 14 to rotate together, so that the first fixed shaft 3 drives the first fixed block to rotate accordingly. Since the adjustment plate 21 is respectively pin-connected with the sliding block 20 and the fixed base 2, when rotating, the adjustment plate 21 moves along the supporting slide rod 19 under the action of the sliding block 20, thereby supporting the display screen 4 and completing the adjustment of the angle of the display screen 4, so that students can watch the contents of the display screen 4, the writing board 6 and the staff board 7.

[0051] Then, when in use, the handle 13 is rotated to drive the adjusting gear 12 to rotate. Since the fixed rack 11 is meshed with the adjusting gear 12, the fixed racks 11 on both sides drive the connecting block 10 to move to both sides under the meshing action of the gears. Therefore, under the action of the guide slider 8, the writing board 6 moves to the left along the guide groove 9, and the staff board 7 moves to the right along the guide groove 9, so as to facilitate the writing of music theory knowledge and the drawing of music scores during teaching.

[0052] Next, when in use, pull the baffles 28 on both sides of the electronic piano 22, and under the action of the movable sleeve blocks 27, move them away from each other along the guide slide rod 25, squeeze the fixed spring 26, and rotate the protective cover 24 around the second fixed axis 23 to a vertical state, loosen the baffles 28, and under the elastic force of the fixed spring 26, the movable sleeve blocks 27 on both sides drive the baffles 28 to move toward each other, and fix the protective cover 24 in the vertical state to facilitate the use of the electronic piano 22. After use, restore the protective cover 24 to a horizontal state to protect the keys of the electronic piano 22.

[0053] Finally, when in use, the writing tool can be placed in the writing tool storage box 30, and the fixed gear 33 is rotated. Since the fixed gear 33 is engaged with the tooth groove 34, under the meshing action of the gears, the movable column 32 drives the microphone 38 to move vertically. When it moves to a suitable height, the locking screw 35 is rotated. Under the action of the thread, the locking block 36 is pushed into the tooth groove 34 to fix the movable column 32. The direction and angle of the microphone 38 can be adjusted through the universal joint 37 to facilitate the microphone 38 to receive sound.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A music theory teaching device, comprising a music theory teaching device body (1) and an electronic keyboard (22), characterized in that: A fixed base (2) is arranged in the middle of the top of the main body (1) of the music theory teaching device, a first fixed shaft (3) is arranged in the front of the interior of the fixed base (2), a first fixed block is sleeved on the outside of the first fixed shaft (3), a display screen (4) is arranged in the front of the top of the first fixed block, a storage frame (5) is arranged behind the display screen (4), a writing board (6) is arranged on the left side of the interior of the storage frame (5), and a staff board (7) is arranged on the right side of the interior of the storage frame (5), The writing board (6) and the stave board (7) are provided with guide slide blocks (8) on both upper and lower sides, the storage frame (5) is provided with guide slide grooves (9) on both upper and lower sides, a connecting block (10) is provided on the top of the guide slide block (8) close to the central axis of the storage frame (5), a fixed rack (11) is provided above the connecting block (10), an adjusting gear (12) is provided between the two fixed racks (11), and the input end of the adjusting gear (12) is connected to a turning handle (13).

2. A music theory teaching device according to claim 1, characterized in that: The first fixed block is movably pin-connected with the fixed base (2) via a first fixed shaft (3); the first fixed block is respectively fixedly connected to the display screen (4) and the storage frame (5); the guide slider (8) is respectively fixedly connected to the writing board (6) and the stave board (7); the guide slider (8) is adapted to the guide slide groove (9); the upper guide slider (8) is fixedly connected to the connecting block (10); the connecting block (10) is fixedly connected to the fixed rack (11); the fixed rack (11) is meshed with the adjusting gear (12); and the adjusting gear (12) is fixedly connected to the turning handle (13).

3. A music theory teaching device according to claim 1, characterized in that: A first sprocket (14) is arranged on the left side of the first fixed shaft (3), a transmission chain (15) is sleeved on the outside of the first sprocket (14), a second sprocket (16) is arranged behind the transmission chain (15), an input end of the second sprocket (16) is connected to a first motor (17), a fixed frame (18) is arranged behind the storage frame (5), support slide bars (19) are arranged on both sides of the fixed frame (18), a slide block (20) is sleeved on the outside of the support slide bar (19), and an adjustment plate (21) is arranged behind the slide block (20).

4. A music theory teaching device according to claim 3, characterized in that: The first fixed shaft (3) is fixedly connected to the first sprocket (14), the first sprocket (14) is chain-driven with the second sprocket (16) through a transmission chain (15), the second sprocket (16) is fixedly connected to the first motor (17), the storage frame (5) is fixedly connected to the fixed frame (18), the fixed frame (18) is fixedly connected to the support slide bar (19), the support slide bar (19) passes through the sliding sleeve block (20), and the adjustment plate (21) is movably pin-connected to the sliding sleeve block (20) and the fixed base (2) respectively.

5. A music theory teaching device according to claim 1, characterized in that: An electronic keyboard (22) is arranged in front of the fixed base (2), a second fixed shaft (23) is inserted into the rear of the electronic keyboard (22), a second fixed block is sleeved on the outside of the second fixed shaft (23), a protective cover (24) is arranged on the top of the second fixed block, guide slide bars (25) are arranged on the inner walls of both sides of the electronic keyboard (22), a fixed spring (26) is sleeved on the outside of the guide slide bars (25), a movable sleeve block (27) is arranged on the side of the fixed spring (26) close to the central axis of the electronic keyboard (22), and a baffle (28) is arranged in front of the movable sleeve block (27).

6. A music theory teaching device according to claim 5, characterized in that: The electronic keyboard (22) is movably pin-connected to a second fixed block via a second fixed shaft (23); the second fixed block is fixedly connected to a protective cover (24); the guide slide bar (25) passes through a movable sleeve block (27); the movable sleeve block (27) is elastically connected to the electronic keyboard (22) via a fixed spring (26); and the movable sleeve block (27) is fixedly connected to a baffle (28).

7. A music theory teaching device according to claim 1, characterized in that: Speakers (29) are provided on both sides of the fixed base (2), a writing tool storage box (30) is provided in front of the left speaker (29), and a supporting base column (31) is provided in front of the right speaker (29), a movable column (32) is provided inside the supporting base column (31), a fixed gear (33) is provided on the left side of the supporting base column (31), a tooth groove (34) is provided on the left side of the movable column (32), a locking screw (35) is passed through the top of the fixed gear (33), a locking block (36) is provided on the right side of the locking screw (35), a multi-knot tube (37) is provided on the top of the movable column (32), one end of the multi-knot tube (37) is provided with the movable column (32), and the other end of the multi-knot tube (37) is connected to a microphone (38).

8. A music theory teaching device according to claim 7, characterized in that: The supporting base column (31) is movably pin-connected with the fixed gear (33), the fixed gear (33) is meshed with the tooth groove (34), the locking screw (35) is movably connected with the locking block (36), the locking block (36) is meshed with the tooth groove (34), the movable column (32) is fixedly connected with the universal joint tube (37), and the universal joint tube (37) is fixedly connected with the microphone (38).

9. A music theory teaching device according to claim 1, characterized in that: A support base (39) is arranged below the main body (1) of the music theory teaching device. A bidirectional screw rod (40) is inserted into the bottom of the support base (39). The input end of the bidirectional screw rod (40) is connected to a second motor (41). Screw rod sliders (42) are sleeved on both sides of the outside of the bidirectional screw rod (40). A movable plate (43) is arranged above the screw rod slider (42). The two movable plates (43) are arranged crosswise. A support sleeve block (44) is arranged above the movable plate (43). A support plate (45) is inserted into the support sleeve block (44). Movable sleeve columns (46) are arranged on both sides of the support plate (45). A fixed sliding rod (47) is inserted into the movable sleeve column (46). A connecting frame (48) is arranged on the top of the movable sleeve column (46). The connecting frame (48) is fixedly connected to the fixed base (2). Support wheels (49) are arranged on both sides of the bottom of the support base (39).

10. A music theory teaching device according to claim 9, characterized in that: The second motor (41) is fixedly connected to the bidirectional screw (40), the bidirectional screw (40) is threadedly matched with the screw slider (42), the movable plate (43) is movably pin-connected with the screw slider (42) and the support sleeve block (44) respectively, the two movable plates (43) are movably pin-connected, the support plate (45) passes through the support sleeve block (44), the support plate (45) is fixedly connected to the movable sleeve column (46), the fixed slide rod (47) passes through the movable sleeve column (46), the movable sleeve column (46) is fixedly connected to the connecting frame (48), and the support base (39) is fixedly connected to the support wheel (49).

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